Electric engine.



PATENTED MAR. 3, 1903.'

w. T. CLARK. ELECTRIC ENGINE.

. APPLICATION FILED 0GT.1, 1902.

no MODEL.

y wm wenzm T mum's PETERS c0 wen: ur

UNITED STATES PATENT OFFICE.

"WILLIAM THOMAS CLARK, OF SOHENEOTADY, NEW YORK, ASSIGNOR TO TABOR MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYL VANIA, A CORPORATION OF NEW JERSEY.

ELECTRIC ENGINE.

SPECIFICATION forming part of Letters Patent No. 721,670, dated March 3,1903.-

Application filed October 1, 1902.

T aZZ whom it Treaty concern:

Be it known that I, WILLIAM THOMAS CLARK, a citizen of the United States, and a resident of Schenectady, in the county of Schenectady and State of New York, have invented acertain new and useful Improvement in Electric Engines, of which the followingis a specification.

This invention (Case 13) relates to vibratorengines primarily intended for use-in connection with molding-machines of the type illustrated in Letters Patent of the United States numbered 533,401, 582,325, and 654,292, and dated, respectively, January 29, 1895, May 11, 1897, and July 24, 1900, one object of the invention being to utilize the electric current as the force for operating the ham- Iner and another object being to secure a maximum efiect of'the force employed.

To these and other ends the invention consists of features of construction and combinations of devices hereinafter described, and more particularly pointed out in the appended claims.

The preferred form of the invention is illustrated in the accompanying drawings, forming part hereof, in which Figure 1 is a side elevation. Fig. 2 is a central longitudinal sectional view. Figs. 3 and at are detail views, and Fig. 5 is a diagram matic View of the electrical connections.

In the drawings, reference a designates a tube preferably formed of a soft iron; I), metal disks fitting and secured in the ends of tube a, and c an eye attached to one of the disks b and forming the means whereby the device may be attached to a pattern, patterncarrier, vibrator-frame, or other part. Inside the shell or casing are two electromagnet-coils d, one at either end, and 6 marks short metal cores secured to the ends I) and extending but part of the way into the said coils d.

Referencefmarks insulating covers for the coils, and g metal plates embedded in said coversfand connected with the ends of said coils.

' It marks bushings of insulating material inserted and fast in perforations in tube a opposite the plates g, and i binding-screws en- Serial No. 125,489. (No model.)

gaging with said bushings h and bearing against said plates 9 to make electrical connection therewith. The screwst'are connected by a wire Z, which is or may be a part of a current-supplying wire. The screws 70 are connected by wires m with contact-plates n 0, one screw with one plate and the other screw with the other plate. The plates n o are secured to a block 19 of insulating material, which is secured to the tube a at one side of a slot q in said tube.

lVithin the hollow coils d is a metal rod T, which is shorter than the space between the opposed ends of cores e, and sis an iron disk fast to the rod 9, said disk being between and free to move toward and from the opposed ends of coils d, while rod 1' is adapted to strike against the cores 6. A springt between disk 3 and one of the coils 61 moves the disk and rod to one extreme of their motion. The disk 8 has a rod u fast thereto, and said rod or arm n projects through the slot q and has a head 0 attached thereto outside of the tube a. The head 1; is bored transversely and 1011- gitudinally for thereception of insulatingbushings to.

Reference 00 marks a contact-rod inserted in a bushing w and projecting between the plates 71 0, as shown, while y marks a bindingscrew which engages with a bushing w and holds'rod a in place, making electrical contact with the latter. The contact-rod x under the action of springt is normally in contact with plate 0.

At the side of slot q away from the blockp is a similar block 2; of insulation, and the screw y is connected by a flexible wire 1 with a binding-screw 2 or contact which engages with block a. A spring-key 3 is also connected with block 2' and with a supply-wire 4 and is adapted to be closed down upon contact-screw 2 to close the circuit.

A comparison of- Figs. 1 aud t will show that the plate 0 is electrically connected with the right-hand screw 76 and plate '02 with the left-hand screw 70 in Fig. 1. It therefore follows that upon closing the key 3 the current passes through the coil- 01 at the right in Figs. 1 and 2 and disk 3 and rod 7' are drawn to the right against the force of spring '15 until rodr I00 strikes the core-piece e at that end, by which time the rod w will have made contact with plate n, (having broken contact with plate shortly after rod 0" began to move,) thus establishing the current through the left-hand coil d. This causes rod 1" and disk 8 to move to the left until rod 7 strikes the core-piece e at that end, by which time rod strikes contact 0, (having left contact n as rod 1" moved toward the left-,) and so energizes right-hand coil d, and so on back and forth as long as key 3 is held down. The effect of the blows struck by rod 1" is communicated to the casing and to eye 0, and so to the part to which eye 0 is attached. The blows of rod 1" are struck with great rapidity.

Obviously cores e may be omitted and rod 7" lengthened to strike ends 1) without departing from this invention.

What I claim as new, and desire to secure by Letters Patent of the United States, is-

1. In an electric engine, the combination of adjacent alined electromagnetcoils, a casing having short cores projecting into said coils, a reciprocatory striker between said cores, a disk on said striker and between the adjacent ends of said coils, adjacent contactterminals connected with said coils, and an arm moved from one to another of said terminals by said disk to make and break the circuit through said coils alternately.

2. In an electric engine, the combination of adjacent alined coils, a casing, a reciprocatory striker within said coils, a disk on said striker and between the adjacent ends of the coils,and circuit making and breaking means operated by said disk and energizing said coils in alternation.

3. In an electric engine, the combination of adjacent alined coils, a casing having short cores projecting into said coils, a reciprocatory striker Within said coils, a disk on said striker and between the adjacent ends of the coils, and circuit making and breaking means operated by said disk and energizing said coils in alternation.

4:. In an electric engine, the combination of adjacent alined coils, a casing having short cores projecting into said coils, a reciprocatory striker Within said coils, a disk on said striker and between the adjacent ends of the coils,a spring for moving said disk and striker to one extreme of their motion, and circuit making and breaking means operated by said disk and energizing said coils in alternation.

Signed at Schenectady, in the county of Schenectady and State of New York, this 8th day of September, A. D. 1902.

WILLIAM THOMAS CLARK.

Witnesses:

J. H. V. WEMPLE, DELLA VEDDER. 

